/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 19:44:47,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 19:44:47,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 19:44:47,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 19:44:47,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 19:44:47,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 19:44:47,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 19:44:47,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 19:44:47,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 19:44:47,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 19:44:47,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 19:44:47,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 19:44:47,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 19:44:47,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 19:44:47,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 19:44:47,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 19:44:47,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 19:44:47,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 19:44:47,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 19:44:47,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 19:44:47,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 19:44:47,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 19:44:47,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 19:44:47,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 19:44:47,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 19:44:47,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 19:44:47,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 19:44:47,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 19:44:47,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 19:44:47,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 19:44:47,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 19:44:47,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 19:44:47,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 19:44:47,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 19:44:47,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 19:44:47,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 19:44:47,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2019-12-18 19:44:47,868 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 19:44:47,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 19:44:47,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 19:44:47,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 19:44:47,870 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 19:44:47,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 19:44:47,870 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 19:44:47,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 19:44:47,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 19:44:47,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 19:44:47,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 19:44:47,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 19:44:47,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 19:44:47,872 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 19:44:47,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 19:44:47,872 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 19:44:47,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 19:44:47,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 19:44:47,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 19:44:47,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 19:44:47,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 19:44:47,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 19:44:47,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 19:44:47,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 19:44:47,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 19:44:47,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 19:44:47,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 19:44:47,875 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 19:44:47,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 19:44:47,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 19:44:48,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 19:44:48,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 19:44:48,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 19:44:48,209 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 19:44:48,209 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 19:44:48,211 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2019-12-18 19:44:48,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4839721ef/d41eec6314b141088f07093086c9207d/FLAG44cfe6a41 [2019-12-18 19:44:48,849 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 19:44:48,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2019-12-18 19:44:48,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4839721ef/d41eec6314b141088f07093086c9207d/FLAG44cfe6a41 [2019-12-18 19:44:49,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4839721ef/d41eec6314b141088f07093086c9207d [2019-12-18 19:44:49,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 19:44:49,118 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 19:44:49,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 19:44:49,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 19:44:49,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 19:44:49,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:44:49" (1/1) ... [2019-12-18 19:44:49,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217f22d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49, skipping insertion in model container [2019-12-18 19:44:49,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:44:49" (1/1) ... [2019-12-18 19:44:49,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 19:44:49,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 19:44:49,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:44:49,757 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 19:44:49,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:44:49,902 INFO L208 MainTranslator]: Completed translation [2019-12-18 19:44:49,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49 WrapperNode [2019-12-18 19:44:49,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 19:44:49,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 19:44:49,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 19:44:49,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 19:44:49,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49" (1/1) ... [2019-12-18 19:44:49,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49" (1/1) ... [2019-12-18 19:44:49,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 19:44:49,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 19:44:49,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 19:44:49,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 19:44:49,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49" (1/1) ... [2019-12-18 19:44:49,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49" (1/1) ... [2019-12-18 19:44:49,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49" (1/1) ... [2019-12-18 19:44:49,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49" (1/1) ... [2019-12-18 19:44:49,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49" (1/1) ... [2019-12-18 19:44:49,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49" (1/1) ... [2019-12-18 19:44:49,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49" (1/1) ... [2019-12-18 19:44:49,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 19:44:49,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 19:44:49,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 19:44:49,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 19:44:49,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 19:44:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-18 19:44:50,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-18 19:44:50,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 19:44:50,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 19:44:50,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 19:44:50,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 19:44:50,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 19:44:50,041 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 19:44:50,182 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_w_returnLabel [2019-12-18 19:44:50,268 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_r_returnLabel [2019-12-18 19:44:50,388 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 19:44:50,388 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 19:44:50,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:44:50 BoogieIcfgContainer [2019-12-18 19:44:50,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 19:44:50,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 19:44:50,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 19:44:50,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 19:44:50,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:44:49" (1/3) ... [2019-12-18 19:44:50,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d29430e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:44:50, skipping insertion in model container [2019-12-18 19:44:50,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49" (2/3) ... [2019-12-18 19:44:50,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d29430e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:44:50, skipping insertion in model container [2019-12-18 19:44:50,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:44:50" (3/3) ... [2019-12-18 19:44:50,398 INFO L109 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2019-12-18 19:44:50,406 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 19:44:50,407 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 19:44:50,413 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 19:44:50,414 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 19:44:50,436 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:50,437 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:50,437 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:50,437 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:50,438 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:50,438 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:50,442 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:50,442 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:50,442 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:50,443 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:50,458 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:44:50,474 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:44:50,474 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:44:50,475 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:44:50,475 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:44:50,475 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:44:50,475 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:44:50,475 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:44:50,475 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:44:50,485 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 37 transitions [2019-12-18 19:44:50,487 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions [2019-12-18 19:44:50,522 INFO L126 PetriNetUnfolder]: 1/36 cut-off events. [2019-12-18 19:44:50,522 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:44:50,532 INFO L76 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs. 3/37 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2019-12-18 19:44:50,535 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions [2019-12-18 19:44:50,563 INFO L126 PetriNetUnfolder]: 1/36 cut-off events. [2019-12-18 19:44:50,563 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:44:50,564 INFO L76 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs. 3/37 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2019-12-18 19:44:50,566 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 190 [2019-12-18 19:44:50,567 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 19:44:51,245 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-12-18 19:44:51,305 INFO L206 etLargeBlockEncoding]: Checked pairs total: 479 [2019-12-18 19:44:51,305 INFO L214 etLargeBlockEncoding]: Total number of compositions: 26 [2019-12-18 19:44:51,309 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 11 transitions [2019-12-18 19:44:51,318 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26 states. [2019-12-18 19:44:51,320 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-12-18 19:44:51,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 19:44:51,329 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:51,330 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 19:44:51,330 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:51,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:51,338 INFO L82 PathProgramCache]: Analyzing trace with hash 135654362, now seen corresponding path program 1 times [2019-12-18 19:44:51,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:51,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739601171] [2019-12-18 19:44:51,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:51,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739601171] [2019-12-18 19:44:51,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:51,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:44:51,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566229680] [2019-12-18 19:44:51,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:44:51,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:51,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:44:51,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:51,624 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2019-12-18 19:44:51,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:51,658 INFO L93 Difference]: Finished difference Result 30 states and 43 transitions. [2019-12-18 19:44:51,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:44:51,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 19:44:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:51,683 INFO L225 Difference]: With dead ends: 30 [2019-12-18 19:44:51,683 INFO L226 Difference]: Without dead ends: 12 [2019-12-18 19:44:51,684 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-18 19:44:51,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-18 19:44:51,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-18 19:44:51,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-12-18 19:44:51,716 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2019-12-18 19:44:51,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:51,716 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-12-18 19:44:51,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:44:51,717 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-12-18 19:44:51,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 19:44:51,717 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:51,717 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:51,718 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:51,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:51,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1490764093, now seen corresponding path program 1 times [2019-12-18 19:44:51,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:51,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014689773] [2019-12-18 19:44:51,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:51,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:51,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014689773] [2019-12-18 19:44:51,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:51,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:44:51,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895650064] [2019-12-18 19:44:51,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:44:51,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:51,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:44:51,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:51,808 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2019-12-18 19:44:51,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:51,819 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-12-18 19:44:51,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:44:51,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-18 19:44:51,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:51,821 INFO L225 Difference]: With dead ends: 12 [2019-12-18 19:44:51,821 INFO L226 Difference]: Without dead ends: 11 [2019-12-18 19:44:51,822 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:51,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-18 19:44:51,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-18 19:44:51,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-18 19:44:51,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-12-18 19:44:51,828 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2019-12-18 19:44:51,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:51,829 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-12-18 19:44:51,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:44:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-12-18 19:44:51,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 19:44:51,829 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:51,829 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:51,830 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:51,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:51,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1515788533, now seen corresponding path program 2 times [2019-12-18 19:44:51,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:51,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43867325] [2019-12-18 19:44:51,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:51,920 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43867325] [2019-12-18 19:44:51,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:51,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:44:51,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527623753] [2019-12-18 19:44:51,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:44:51,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:51,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:44:51,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:44:51,922 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2019-12-18 19:44:51,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:51,928 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2019-12-18 19:44:51,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:44:51,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-18 19:44:51,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:51,929 INFO L225 Difference]: With dead ends: 5 [2019-12-18 19:44:51,929 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 19:44:51,929 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:44:51,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 19:44:51,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 19:44:51,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 19:44:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 19:44:51,930 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-12-18 19:44:51,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:51,931 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 19:44:51,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:44:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 19:44:51,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 19:44:51,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 07:44:51 BasicIcfg [2019-12-18 19:44:51,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 19:44:51,939 INFO L168 Benchmark]: Toolchain (without parser) took 2820.88 ms. Allocated memory was 145.8 MB in the beginning and 234.9 MB in the end (delta: 89.1 MB). Free memory was 102.4 MB in the beginning and 148.2 MB in the end (delta: -45.7 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:51,941 INFO L168 Benchmark]: CDTParser took 1.71 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-12-18 19:44:51,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.24 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 102.2 MB in the beginning and 159.9 MB in the end (delta: -57.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:51,944 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.04 ms. Allocated memory is still 202.4 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:51,945 INFO L168 Benchmark]: Boogie Preprocessor took 26.34 ms. Allocated memory is still 202.4 MB. Free memory was 157.9 MB in the beginning and 156.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:51,952 INFO L168 Benchmark]: RCFGBuilder took 404.27 ms. Allocated memory is still 202.4 MB. Free memory was 156.5 MB in the beginning and 138.9 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:51,954 INFO L168 Benchmark]: TraceAbstraction took 1545.57 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 138.9 MB in the beginning and 148.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:51,965 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.71 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 784.24 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 102.2 MB in the beginning and 159.9 MB in the end (delta: -57.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.04 ms. Allocated memory is still 202.4 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.34 ms. Allocated memory is still 202.4 MB. Free memory was 157.9 MB in the beginning and 156.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.27 ms. Allocated memory is still 202.4 MB. Free memory was 156.5 MB in the beginning and 138.9 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1545.57 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 138.9 MB in the beginning and 148.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 40 ProgramPointsBefore, 13 ProgramPointsAfterwards, 37 TransitionsBefore, 11 TransitionsAfterwards, 190 CoEnabledTransitionPairs, 6 FixpointIterations, 10 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 91 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 479 CheckedPairsTotal, 26 TotalNumberOfCompositions - PositiveResult [Line: 695]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 37 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 10 SDslu, 7 SDs, 0 SdLazy, 9 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...